Joseph watson



@uiten `tttteeittr-teut- @titty soL'oMoiN DRUMLLARD, Je., or sAMn PLAGE; M g Leners Parmi No. 71,433, am@ Novembef 2e, 1867..

JQSEPMHWTSO-N, or BUFFALO, NEW YORK, AssIc'NQReTO?IMSELMAD IMPROVEMENT Inconsrnnorme rUBNAcn-Doonsj-M 1f i @lgs ,Stimmt tefetrtt tu intime ttrtt attm mit mating Mitt nfgtlgt am, M M

lIJO ALD WHOMMT MAY GONCERN: I ,i M t M Be itkjnown thatMI, JosnPiI'WATsoN, of the lcity of Bn'alo, inL the county of Erie, andState of NewYork, `htweinvented certain new 'und usefulilfmprovernents in the Construction'of Furinaces; endl do herebyitieclare that the yfollowing lis a full 'and exact description thereof, rcterenc'e being had to the accompanying dmrn making partei'` this specification, in which` i f i Figure 1 is a front' elevation of a. furnace provided with my improvement. Figure 21is a vertical cross-section throgh the' door and arch in plane f line@ azgiig.,M `Figure 3 is a. front elevation of the brickfor `piece forming the (huir-arch.` M M Figure 4 is e horizontal section of the door inthe plane of lineyy, g. 1. LikelettersMof reference designatecorrespondingparts in alll the gur'es. Y M M M M My invention consists in the peculiar'menner of constructing the door and arch of' peddling end heating` furnaces, each being formed of a. single piece or brick, and Ien iron, frame, substantially cshereincfterdescribed; f InMthe drawings, A represents the brick, ond-B the iron frame, which` togethe'rMform the door?V C",`the brick `arch-`piece, and D the ironframe or cross-plete o f the stime; E E, the j'ambs, and `F portion offMtheM roof` of thefurnace, M M Mf l 'i i i The brick for the door is rst monldedof theM'fu'll size of therecess inwhich the door d tsythe outer edges M and sides being recessed, so that the rectangular iron frame B may bec'st thereim; Thiel frame isimadeof size e, little less than that of the inner face of the door, as represented, and is provided withltwoi cross-pieces of plates, g g, of wrought iron, which iit in corresponding recesses formed for their :recepticn. Thebifick porftionMbcing moulded of the required forni, MasMnbove stated, it is then placed in mould, the z nnllecble `bers g arranged in their recesses,when the frame is cest u roun'dit, sockets having Aprerionsly been formed `in the bri i alt` each edge to receive the lugs la, which are cast fwith the frame, and by which theMfrnmeis rmly secnredto `the brick, as represented in figs. 1 and 4. Iis zilinlqat thelcentre and top of the freine, byzwiiich theMdc'orMM ra.ised by a. lever in the nsual manner. By this lmode`MMof' constructingthe door, the iron frzirne is wholly pr tectedMfrom the direct heat of the furnace, and consequently will lastmuch.' longer thanwhenconstructed in he ordinary manner. i M l i i i i i Where the door is made in 'the usual manner, Mofgsmnll'b'rck, surround'edlby` aniironfrnme, the-lonerfedge V of Vthe latter, being subject tothe intense hectof thefurnace, soon burns away, and the bricksfcllldo'wn 1a. new dooMhas to be constructed, involvingthe loss of materiz'il and time ofthehandsremainingidlm inn :to the cost of the door. Bymy mode of construction, the greater part ofthisexpense is avoided. If the loyre M portion of the franie should' in tinte burnaway, the door, being of anentire brick, Mivonld beMkstill susteine `by i lthe cross-bars g ond lugs h, which ivonldbe inadequate for thepurpose 'if the doorwere formed ,of-smell itntlisei@L crate brick,- in the common manner. The door-arch is also constructed of one entire-piece, C, of the form sho t vn,

a. recess being mede forthe iron cross-plateor'frame D, which is of` the ordinary ccnstruction; z M

The inner side of the arch-piece is made inclined,fe.s shown at l, in g. 2, soMas to form c .fkey end support .forMthe roof F, While 'the frame D sustains the arch against thehorinontal'pressure townrdsMtheMfront. t f

'When theMarch is formed of s rnall brick, in the common way,'the flame worksjnthe joints, melting portions 0f the'brick, Vthct'run down, forming pendants, obstructing the aperture of the door, which, inMlling the; fu r` nace, are liable tofbe struck and broken o', andnotunfrequently resulting in' thefallingdownofitho entirelcrch. i The expansionand contraction ofuthe'nrch also has a. tendency tio-looisenthe' brick ,M`a .n d1 Mhnsten the destruction o f both 'door and arch, when of this construction. M MyM improvement prevents, inra. great rneasnre,gall o f t "se dimensies j I In commonrdoor-fremes the entire beck is of iron,which requires twice the amountof me lithalt mine does; besides,fthy confine'the outernrface of thebrick fromthe external cir,` which in mineha keeping it comparatively cool. Forming theerch-of a,- singlebrick not'onlymakcs'the se andrsnpports `the roof` betten'butialso enables theMrece'ss for the' iron frame tobe'reedil nndtherebysavcs the'MMlabor of cutting cn'diitting the brick in the ordincrymnnner, 13hile ,tnjofis morefpe f M-In the common'method, the displacement o f it'singlebrickby thee under vthe intense heat' will often force the door oif, so tts to-leave a crevice, through which the flame; escapes; but when the crown-piece is entire such afresult cannot possibly occur, the expansion being generaland equnL lWhat I claimas my invention, :rnd cesire to secure by Letters Patent, is-L v 1. vConstructing furnace-doors of :t single brick, A, in combination with an iron frame, B, substantiallyin the manner and for the purpose set forth. v

2.11'. also claim the mannerof constructing the frumeB, with the wrought-iron cross-bars gg, and lugs L 7L, Y for sustaining the brick and securing them in the frame, substantially as specified, l 1 3. I also claim constructing the door-arch of n single crownpicce, C, formed with an inclined` back, Z, :tml recess in front, for and in combination with'the iron plate D, substantully as und for the purpose set forth.

In Witness whereof I hace hereunto signed my name in the presence of two subscribing witnesses.

JOSEPH WATSON.

Witnesses:

` JAY Hmmm,

ALBERT HAIGHT. 

